Perform a set of pull-ups or push-ups at the top of every minute for twenty minutes. Perform pull-ups on the odd numbered minutes (1,3,5,7,9,11,13,15,17,19) and push-ups on the even numbered minutes (2,4,6,8,10,12,14,16,18,20). You will perform ten sets of each exercise. The alternating pattern will allow you to do more reps and/or more challenging reps in each set than you could do in superset fashion.

This is a challenging workout, but it is effective and very satisfying to complete. During the thirty seconds between sets of rope skipping you will complete a brief set of an additional exercise. Alternate sets of push-ups and sit-ups so that you perform ten sets of each during the twenty minutes.

You do not have long to perform each set. You also will need extra time to transition from skipping to pushing or crunching and back again. Plan to keep the sets small (e.g. 5-20 reps) and allow ~5 seconds for the first transition and 5-10 seconds for the transition back to the rope.

Start with sets of push-ups and sit-ups smaller than you think you can handle. This is a conditioning drill, not a strength workout.

This does not have to be done at an all-out sprint. Find a rhythm and work from one exercise to the other.

The sets of push-ups and pull-ups do not have to last the entire thirty seconds allotted for them. Simply perform a set based on your current ability, allowing adequate time to transition back to the cardio movement of your choice.

The sprints are progressive. The first sprint begins at a jog and climaxes at 50% of maximum effort; the second sprint goes from 40% at the beginning to 60% at the climax; the third sprint goes from 50-70%; the fourth sprint from 60-80%; the fifth sprint from 70-90%; the sixth sprint reaches 95% of maximum effort; the seventh and eighth sprints are run at 95-100% effort.

If you are not accustomed to the type of sprint training we do around here, do not max out on the final three sprints - climax between 80-90% of maximum effort.